The first detection of a collapsed core globular cluster in M31

Details The first detection of a collapsed core globular cluster in M31 The first detection of a collapsed core globular cluster in M31

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...409l..17b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 409, no. 1, p. L17-L19.

Astronomy and Astrophysics

Astrophysics

16

Collapse, Cores, Globular Clusters, Image Processing, Spiral Galaxies

Scientific paper

We report on the observations of a globular cluster (designated G105 = Bo 343) in the nearby spiral galaxy M31, using the Hubble Space Telescope (HST). Image deconvolutions using three different methods indicate that this cluster has a density profile with the morphology characteristic of stellar systems which have undergone core collapse, i.e., a power-law density cusp near the center. This is the first such detection in a galaxy as distant as M31. This discovery may lead to extensive future statistical studies of the globular cluster system of M31, and thus a better understanding of its evolution.

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